Biking (Bicycling) and Photographing.. Advice?

That’s an excellent idea of setting up a camera on a bike. That looks very sturdy enough to hold the weight of the camera while riding the bicycle.

I was assigned to photograph bicycle cops back in the days of film.

I put a Gitzo ball head on a Manfrotto clamp... clamped to the seat-post with a N8000 and electro release.
Not sure how it would have faired in the rain though. Got some neat photos... anyway most unique and secure way I ever carried a camera on a bicycle.

I usually just put the lightest camera I have in the saddle bag.

I toured several months with a 4x5. I put the lens in the front pannier, right side, thinking to protect that side if I went into a crash. Yeah, right -- the one big crash I took had me over the handlebars and the front wheel/handlebars ended up rotated180 degrees! But everything ended up okay.

I had the camera in its pack on top of the back rack -- pretty well protected by the panniers.

On short trips with only the Rollei, I use an over-the-shoulder bag that works well in keeping the vibrations down somewhat. The bag ends up on the middle of by back, so my balance is fine. I just hope I don't crash and burn.